Arbor-holding attachment.



E. J. KEARNEY & T. TREGKER. ARBOR HOLDING ATTACHMENT. APPLIOATIQN FILED APR. 7, 1911.

Patented Feb. 18, 1913.

UNITED STATES PATENT OFFICE.

EDWARD J. KEARNEY, or wiuwn'rosn, AND -"rnnononn WISCONSIN. v

ARBOR-HOLDING ATTACHMENT.

, 'Spccification of Letters Patent. t te 13, 1913,

Application m n April 7, 1911. Serirl No. 619,477.

To all whom it may concern Be it known that we, EDWARD J KEARNEY and THEODORE TREoKnR, citizens of the United States, residing, respectively, at \Vauwatosa and Vest Allis, county of.Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Arbor-Holding Attachments, of which the following is a specification.

Our invention relates to improvements in chines, when a face cutter is turned in one direction, the threads are caused to bind, and when turned in the other direc-' tion, the tendency is for the tool to unscrew, and detach itself from the spindle, making it impractical to use both right and left hand cutters, as is frequently desirable in the use of face cutters.

The object of our invention is to provide a spindle adapted to receive a removable attachment for engaging an arbor, and through which rotative motion may be transmitted in either direction to the arbor and tool, the attachment being connected with the spindle in such .a manner as to substantially eliminate the possibility of injury to the spindle;also to provide a "form of spindle adapted for driving face cutters in either direction of rotation. 1

In the following description, reference is had to the accompanying drawings, in whichi Figure 1 is a perspective View illustrating a portion of .a milling machlne, including the spindle .and arbor, and showing my in' vention embodied therein.- Fig. 2 is adetail view, showing, in section, the arbor receiving end of the spindle, together with the bearing member and a portion of the column, and'also showing the arbor in posi-' tion and supporting a milling cutter. Fig. 3 is a detail view of the outer face of the connecting member, with the arbor in position, the arbor being shown in cross section. Fig. 4 1s a detail sectional view of the arbor receiving end of the spindle with the connecting member removed and a face milling cutter thereon in position for use- Like parts are identified by the same reference charactersthroughout the several views.

I The spindle A is provided with the usual socket to receivethe tapered plug B of the arbor C. It is also provided with an end flange A at the arbor receiving end of the spindle, which is: faced off to receive a connecting member D, which comprises an arbor engaging collar having interior notches .E in which projections F carried by an arbor flange G are adapted to enter. The connecting member D is secured to the end of the spindle by screws H, which are relieved of strain by key members I, socketed in the opposing faces of the spindle and connecting member. plug B is inserted in the spindle socket, the

TRECKER, or wns'r ALLIS,

When the arbor projections F enter the collar notches E and l the motion of the spindle is transmitted through the connecting'member and projections F tothe arbor and the tool or cutter J It is not essential that the flange' G and "projections F should be formed integrally with the arbor bar, since the arbor may be provided with sleeve members, such as the spacing members K and L, which in ordi nary practice have key connection with the arbor bar, and one of which, for the purposes of our invention, may be provided with suitable lugs or projections F. But where the arbors are manufactured especially foruse with the connectin member D,.the projections F and flange may be formed integrally with the arbor'or with the toolor cutter. 7 Where face milling cutters are used, the connecting member I). may, be removed, and the cutter secured directly to the head, by the screws H. In such case, the cutter will of course be provided with notches-to receive the keys I. Having thus described our invention, what we claim as'new, and desire to secure by Letters Patent, is-

1. The combination with the spindle of a, milling machine having a socketed end, of a separable connecting member rigidly secured to said spindle end, and apertured to allow an arbor plug to pass therethrough,

said connecting member having internal notches extending radially from the walls of said aperturef-and an arbor having a plug adapted to enter the spindle socket, and provided with project-ions adapted to seat m said'notches.

2. The combinationwith the arbor receiving end of a milling machine spindle, of a separable connecting member seated upon the end of the spindle-screws rigidly securing said member to the ends of the spindle, and an arborfadapted for'interlocking engagement with said member to receive rotaryLmotion therefrom; said spindle end being adapted for the rigid connection therewith of either the connectin member or a face milling cutter, interc angeably, by meansof such screws. i

3. The combination with the arbor receiving end of a milling machine spindle, of a separable connecting collar member seated upon the end of the spindle and keyed thereto, screws securing said member to the spindle, and an arbor extending through the collarmember into the spindle, and having projections interlocking with said member to receive rotary motion therefrom.

4. The combination with a socketed end portion of a milling machine s indle of a.

separable connecting collar mem er rigidly having a tapered plug socketed in the s indle, and also havin 'aflan e adapte to enterthe collar an provi ed with projections fitting said notches; said collar being interlocked with the spindle and adapted to transmit rotative motion therefrom to the arbor, substantially as described.-

5. The combination of a milling machine spindle, having a fiat faced, flanged and socketed', arborreceiVing end, an annular connecting member seated on said flat faced flanged end; and providedwith internal notches, and an arbor member having projections adapted to enter the notches and the spindle socket respectively.

In testimony whereof we aflix our signatures in the presence of two witnesses.

EDWARD J. KEARNEY.

THEODORE TRECKER. -Wit-nesses:

' G. A. WEBER,

WALTER MIGKELSON. 

